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Old 04-26-2004, 09:24 PM   #26
DrBiggly
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Member#: 11482
Join Date: Oct 2001
Chapter/Region: South East
Location: Winston-Salem, NC
Vehicle:
02 WRX
Acute Stickeritis

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I'd recommend the largest bar you can find for the front. Don't believe teh Biggly? Ask trhoppe how he feels about a big front bar on an otherwise stock STi...
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Old 04-27-2004, 12:59 AM   #27
FSelekler
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Member#: 41410
Join Date: Aug 2003
Chapter/Region: MAIC
Vehicle:
2006 987-120
Atlas Gray

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Quote:
Originally posted by jmott
what data logging tool did you use? do you reccomend it?
We use MaxQData. It is a pretty nice system, we needed something that works with a Pocket PC rather than Palm. It is not the most useful, unles you do a lot of detail analysis and normalize data, comparing do different cars with different setups. however, it is very useful comparing various setup changes, drivers, or lines.

You can find more informaiton at www.maxqdata.com.
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Old 04-27-2004, 04:23 PM   #28
MattDell
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Join Date: Mar 2002
Chapter/Region: International
Location: London, England
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Quote:
Originally posted by Davis K Powers
What really helped me was having an experienced Subaru RS owner show me this in my own car.

I'm an experienced Subaru RS owner

-Matt
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Old 05-03-2004, 11:24 AM   #29
RoninSTI
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Member#: 49278
Join Date: Nov 2003
Chapter/Region: NESIC
Location: New England
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11 STI
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I had the same exact thing happen this weekend, I showed up and won my first autocross in the STi. I also had the pushing problem. I was trying to fool around with tire pressure to correct it, but I guess the problem is just me
This thread has been very helpful, and I thank you all for your input. Anyways Do you guys run stock tire pressures? Just wondering...
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Old 05-03-2004, 11:37 AM   #30
TyrannoSullyRex
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Member#: 8891
Join Date: Aug 2001
Chapter/Region: International
Location: Houston, TX
Vehicle:
2002 WRX Silver
'02 SV650

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Quote:
Originally posted by jmott
Im planning on getting that "geez" device so I can do stuff like that with my new toy.
You should add the "Old Man Gold" car to your profile.
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Old 05-03-2004, 11:41 AM   #31
makofoto
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Join Date: Sep 2002
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Location: South Pasadena, CA
Vehicle:
2006 Legacy Outback
Blue

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Stock Tire Pressures ? You are putting a lot of extra load on your tires ... of course you need more air ...

There are so many AutoX resources for beginners ... look around.

The Grassroots Motorsports web site, tech section ... has some good articles: http://www.grmotorsports.com/techmain.php

TONs of info here, tire section, etc.

email me your email address so I can send you an attachment ... of our clubs Novice Handbook ..
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Old 05-03-2004, 11:44 AM   #32
Watkinsm3
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Member#: 51740
Join Date: Jan 2004
Location: On an autox course in PA
Vehicle:
2004 STi A-Stock #24
Same as my Coffee : Black

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Quote:
Originally posted by RoninSTI
Anyways Do you guys run stock tire pressures? Just wondering...
Obviously this is gonna vary depending on the tire used but the easiest answer is no...

On my kumho victoracers (255s) I've been running 40psi up front and about 34-36 in the rear (depending on amount of grip i want in the rear, Looser > 35 > more grip > some #psi > looser). Any more than 41 up front and the car starts to push incredibly and much less than 39 I get severe roll over. Not much of a window in my opinion. Mor experimenting to come now that the alignment has been done and the front bar will be going on this week.

-Matt (maybe you guys shouldn't listen to me as I got my azz handed to me this past sunday. It was ugly. Don't think I even made top 10 Pax )
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Old 05-03-2004, 10:09 PM   #33
RoninSTI
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Location: New England
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11 STI
SWP

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A guy running an evoIII(rhd!!) suggested i run 36 in the front and 42 in the rear. I got my fastest time on this setup, but I find it odd that its the exact opposite of the pressures you're running. Would the pressures i ran partially contribute to the understeer?
Sorry for thread hijacking and I really appreciate the detailed informative responses.
Makofoto email is on its way
thanks again, I'd really like to be competive and i'll take all the help i can get
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Old 05-04-2004, 11:03 AM   #34
Watkinsm3
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Member#: 51740
Join Date: Jan 2004
Location: On an autox course in PA
Vehicle:
2004 STi A-Stock #24
Same as my Coffee : Black

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Quote:
Originally posted by RoninSTI
A guy running an evoIII(rhd!!) suggested i run 36 in the front and 42 in the rear. I got my fastest time on this setup, but I find it odd that its the exact opposite of the pressures you're running. Would the pressures i ran partially contribute to the understeer?
Not sure... depends on the tires... suspension... With the high pressures in the rear I imagine the car will probably rotate well but I find running high pressures in the back to gain oversteer makes the car more likely to snap oversteer where as lower pressires to get the oversteer result in a more progress rotation that's easyto control and catch.

Any tire pressure in the rear that is not optimum is going to result in rotation. say for your setup that the rear tires generate maximum grip at 37psi... raising or lowering the pressures from that number is going to reduce rear grip and cause the car to rotate. Which direction you go is a matter of preference for the most part

-Matt
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